... used as a telephone; 9. Arm, disarm, monitor, and intercom by phone; 10. Real-time, Delay, 24 hours, Bypass defense zones ... Voltage: DC12V/1A Standby Current: <55mA Alarming Current: <450mA Wireless Frequency: 315MHz/433MhzGSM Frequency: 900/ 1800/ 1900MHz Back-up Battery ... information youself by phone. 2. How many wieless sensor does can accept? It can accept unlimited wireless sensors including door, ...